Parts for your 2023 Mitsubishi Eclipse cross-Brake booster

2023 Mitsubishi Eclipse Cross Brake Booster

Yes, the 2023 Mitsubishi Eclipse Cross is fitted with a brake booster. Technical sources including Mitsubishi’s workshop literature for the GN-series Eclipse Cross and the Mitsubishi genuine parts catalogue (ASA) show a vacuum-type power brake unit (brake booster) used across the petrol 1.5T and PHEV variants. On the petrol model, boost is supplied via manifold vacuum with an auxiliary pump as required, the PHEV uses an electric vacuum pump to maintain assistance when the engine isn’t running.

The brake booster’s job is to multiply pedal effort so the driver gets strong, consistent braking with a light press. It sits between the brake pedal and master cylinder, using vacuum on one side of a diaphragm and atmospheric pressure on the other to assist braking. On the Eclipse Cross, that means confident stops in city traffic and solid pedal feel on longer kiwi and Aussie road trips, even with a full load on board.

As part of routine servicing, a quick check of the booster and its vacuum supply is smart practice. A technician will confirm the one-way check valve works, inspect the vacuum hose for cracking, and listen for air leaks around the booster body. For PHEV models, they’ll also verify the electric vacuum pump cycles normally and doesn’t run excessively.

Tell-tale signs the booster needs attention include:

• Hard, heavy brake pedal with reduced assist
• Hissing noise under the dash or in the engine bay when pressing the pedal
• Longer stopping distances or a pedal that doesn’t feel linear

If replacement is required, the booster is removed from the firewall, the pushrod free play is set to spec, and the master cylinder is refitted with new seals as needed. Brake fluid should be renewed, and the system bled correctly. For best results, owners should:

• Have the brake system inspected every 12 months or 15,000 km (whichever comes first)
• Replace engine bay vacuum hoses that are oil-soaked or perished
• Use the correct brake fluid grade and keep it fresh to protect internal seals

Look after the booster and vacuum supply, and the Eclipse Cross delivers the reassuring brake feel it’s known for, whether it’s the lively 1.5T or the smooth, quiet PHEV.

Popular questions about 2023 Mitsubishi Eclipse Cross brake booster

Does the 2023 Eclipse Cross use a vacuum brake booster or an electronic unit?

It uses a vacuum-assisted brake booster. The petrol 1.5T relies on engine vacuum with supplemental pumping as required, while the PHEV employs an electric vacuum pump so you still get full assist when the engine’s off. The booster itself is a conventional vacuum diaphragm design.

How long should a brake booster last on an Eclipse Cross?

There’s no fixed expiry, but many last well over 10 years. Heat, oil vapour, and hose ageing are the usual culprits. If the pedal turns heavy, you hear a hiss, or the pump on a PHEV runs constantly, it’s time for an inspection and likely a booster or vacuum-line repair.

Is it safe to drive if the brake booster fails?

Brakes will still work, but pedal effort jumps and stopping distances can increase, especially in an emergency. It’s not recommended to keep driving. Book a repair and, if the pedal is very hard, consider arranging a tow to keep everyone safe.